condition	mean	min	max
4 h after light	20.0096	19.9204	20.0988
8 h after light	39.587500000000006	38.847	40.328
12 h after light	35.26175	30.3472	40.1763
4 h after dark	16.9451	16.6863	17.2445
8 h after dark	9.79541	8.45187	11.0253
12 h after dark	13.274666666666667	8.7285	15.5547